Generic benchmark or guideline values for CCA and BTEX in soil

 

Compound	Source	Benchmark or guideline value	Use	Level of confidence
Arsenic	ORNL 1997	10 mg/kg	benchmark for plants	Moderate
	CCME 1997	12 mg/kg	guideline value for investigation or remediation	Full*
	ANZECC 1992	20 mg/kg	EIL for plants	N/A
	MfE /MoH 1997	30 mg/kga, b 500 mg/kg c, d	interim soil criteria values for timber treatment sites in New Zealand	Based on protection of human health.  Limited consideration given to plant life for agricultural and domestic purposes.
	ORNL 1997	60 mg/kg	benchmark for earthworms	Low
Chromium (total)	ORNL 1997	0.4mg/kg	benchmark for earthworms	Low
	ORNL 1997	1 mg/kg	benchmark for plants	Low
	ANZECC 1992	50 mg/kg	EIL for plants	N/A
	CCME 1997	64 mg/kga, b 87 mg/kg c, d	guideline value for investigation or remediation	Full*
Chromium (VI)	MfE /MoH 1997	4 mg/kga 9-25 mg/kg 360 mg/kg c, d	proposed soil criteria values for timber treatment sites in New Zealand	Based on protection of plant life
	CCME 1997	0.4 mg/kga, b 1.4 mg/kg c, d	guideline value for investigation or remediation	Provisional*
Copper	ORNL 1997	60 mg/kg	benchmark for earthworms	Low
	ANZECC 1992	60 mg/kg	EIL for plants	N/A
	MfE /MoH 1997	130 mg/kg	soil guideline value for timber treatment sites in NZ	Based on protection of plant life
	CCME 1997	63 mg/kga, b 91 mg/kg c, d	guideline value for investigation or remediation	Full*
	ORNL 1997	100 mg/kg	benchmark for plants	Low
Benzene	CCME 1997	0.05 mg/kga 0.5 mg/kgb 5 mg/kgc, d	guideline value for investigation or remediation	Provisional*
	ANZECC, 1992	1 mg/kg	EIL for plants	N/A
	MfE 1999	1.1 - 5.7a 1.1 - 5.7b 3.0 - 28 c,d	soil acceptance criteria - range of values given for different soil types at <1m	B ased on protection of human health
Ethylbenzene	CCME 1997	0.1 mg/kga 1.2 mg/kg b 20 mg/kgc, d	guideline value for investigation or remediation	Provisional*
	MfE 1999	48 - 2200 a 48 - 2200b 170 - 7200 c,d	soil acceptance criteria - range of values given for different soil types at <1m	Based on protection of human health
Toluene	CCME 1997	0.1 mg/kga 0.8 mg/kgb, c,d	guideline value for investigation or remediation	Provisional*
	MfE 1999	68 - 2500a 68 - 2500b 94 - 7500c,d	soil acceptance criteria - range of values given for different soil types at <1m	B ased on protection of human health
Xylenes	ORNL 1997	200 mg/kg	benchmark for plants	Low
	CCME 1997	0.1 mg/kga 1 mg/kgb 17 mg/kgc 20 mg/kgd	guideline value for investigation or remediation	Provisional*
	MfE 1999	48-1700 mg/kga 48-1700 mg/kgb 150-5700 mg/kg c,d	soil acceptance criteria - range of values given for different soil types at <1m	Based on protection of human health

EIV = Ecotoxicological Intervention Value

EIL = Environmental Investigation Level

n/a = not assessed

afor agricultural land, ^b for residential & parkland, ^c for commercial land, ^d for industrial land

*Full = assessment provided data which was sufficient and adequate to calculate a soil quality guideline for environmental health.

*Provisional = assessment could only calculate a provisional soil quality guideline for environmental health

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